thank you for stations up with us. i'm will thomas. >> i'm maureen umeh. a murder was carried out on the street and the authorities of -- received information that the two men ran into the building. the cop his no choice but to go door-to-door looking for the gunman. >> reporter: the shooting took place at 4:00 today. at that point, the police decided to shut down a large apartment building. no one in, no one out and that happen the nid mel -- mild of the street. as they collected evidence, two special teams called active shooter squads were called in to search this building. the officers went door-to-door looking for possible suspects. >> and they saw in the ground level and -- and we maintain officers and the officers -- and until we do the entire building. >> reporter: police close down the building and residents were told to stay inside. we're told officers were posted at all exits, stairwells and the main lobby. residents not at home at the time of the shut down were forced to wait outside for hours. >> and to be patient and wait. >> reporter: one of